If = nominal diameter of reinforcing bar, fs = compressive stress in the bar and fbd= design bond stress of concrete, the anchorage length, La of straight bar in compression is equal to :

• A. <img src="/_files/images/civil-engineering/gate-exam-questions/891-59-1.png">
• B. <img src="/_files/images/civil-engineering/gate-exam-questions/891-59-2.png">
• C. <img src="/_files/images/civil-engineering/gate-exam-questions/891-59-4.png">
• D. <img src="/_files/images/civil-engineering/gate-exam-questions/891-59-3.png">